Trigonopterus daintreensis Riedel

Riedel, Alexander & Taenzler, Rene, 2016, Revision of the Australian species of the weevil genus Trigonopterus Fauvel, ZooKeys 556, pp. 97-162 : 114-116

Taxon classification Animalia Coleoptera Curculionidae

11. Trigonopterus daintreensis Riedel sp. n.

Diagnostic description.

Holotype (Fig. 11a). Length 2.80 mm. Color black; antenna and tarsi ferruginous. Body with marked constriction between pronotum and elytron; in profile convex. Rostrum with median costa and pair of submedian costae; interven ing furrows with rows of coarse punctures each containing one mesad directed seta; in apical third punctate; base dorsally protruding, projecting from profile subangularly. Forehead coarsely punctate. Pronotum with sides weakly converging, rounded to distinct subapical constriction; disk coarsely punctate; along midline with row of ca. 16 punctures; interspaces microreticulate; with median costa. Elytra cuneiform; from humeri markedly converging to narrow apex; dorsally somewhat flattened; base bisinuate; striae deeply incised; intervals costate, with 1-2 rows of small punctures. Legs. Femora densely punctate. Profemur with subbasal callus anteriorly projecting. Tibiae subbasally with dorsal angulation; metatibia subapically with suprauncal denticle. Abdominal ventrites 1-2 laterally swollen, medially forming common cavity; ventrite 5 coarsely punctate, weakly concave. Penis (Fig. 10b) with sides of body diverging; apex subtruncate, with short median extension; endophallus with pair of elongate sclerites, from ostium almost reaching asymmetrical bell-shaped transfer apparatus; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.42-3.05 mm. Body of females subovate. Female rostrum dorsally somewhat flattened; median costa and pair of submedian costae subglabrous.

Material examined.

Holotype (ANIC): ARC4047 (PCR failed), Queensland, Daintree N.P., Noah Beach, S16°09', E145°26', FIT N03F, 10 m, 15-III-07-V-1998. Paratypes (ANIC, SMNK): Queensland: 2 exx, same data as holotype; 1 ex, Noah Beach, S16°09.07', E145°26.45', FIT=4, 10 m, 07-I-09-II-1998; 4 exx, ARC4048 (PCR failed), Noah Beach, S16°09', E145°26', FIT N04F, 10 m, 09-II-15-III-1998.

Distribution.

Queensland: Daintree National Park.

Biology.

Sifted from leaf litter in primary forest.

Etymology.

This epithet is an adjective based on the name of the type locality, the Daintree National Park.